Radiation generating apparatus and radiation imaging apparatus
a radiation generation apparatus and radiation imaging technology, applied in the direction of x-ray tubes, material analysis using wave/particle radiation, instruments, etc., can solve the problem of high potential difference between the radiation shielding member and the envelope, and achieve the effect of suppressing a deterioration in the voltage-withstand performance, preventing a reduction in the amount of radiation, and improving the resistance voltage performan
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first embodiment
[0017]First of all, the first embodiment of the present invention will be described with reference to FIGS. 1A, 1B and 1C. More specifically, FIG. 1A is the cross-section schematic diagram illustrating a radiation generating apparatus according to the present embodiment, FIG. 1B is the enlarged cross-section schematic diagram illustrating a peripheral part of a radiation shielding member (called a shielding member, hereinafter) 16 and an insulating member 21 both illustrated in FIG. 1A, and FIG. 1C is the schematic diagram of the insulating member 21 and a first window 2 for transmitting radiation which are viewed from the side of the shielding member 16 all illustrated in FIG. 1A.
[0018]The radiation generating apparatus according to the present embodiment is equipped with a transmission-type radiation tube 10 (called a radiation tube, hereinafter), and the radiation tube 10 is held within an envelope 1.
[0019]Here, the radiation tube 10 includes a vacuum container 17, an electron em...
second embodiment
[0038]In the present invention, the shape of the shielding member 16 is not limited to that illustrated in FIGS. 1A to 1C. That is, another shape may be used as the shape of the shielding member.
[0039]Therefore, another example of the shape of the shielding member 16 which can be adopted in the present invention will be described with reference to FIG. 2. FIG. 2 is a cross-section schematic diagram illustrating an enlarged peripheral part of the shielding member 16 and the insulating member 21 in a radiation generating apparatus according to the second embodiment of the present invention. It should be noted that, in the present embodiment, the constituent parts other than the shielding member 16 are the same as those already described in the first embodiment.
[0040]The present embodiment is characterized by the opening area of the radiation passing hole 24 of the shielding member 16 becoming gradually larger from the middle of the radiation passing hole 24 toward the side of the firs...
third embodiment
[0043]In the present invention, the shape of the insulating member 21 is not limited to that illustrated in FIGS. 1A to 1C
[0044]Therefore, another example of the shape of the insulating member 21 which can be adopted in the present invention will be described with reference to FIGS. 3A and 3B. FIG. 3A is a cross-section schematic diagram illustrating an enlarged peripheral part of the shielding member 16 and the insulating member 21 in the radiation generating apparatus according to the third embodiment of the present invention, and FIG. 3B is a schematic diagram of the insulating member 21 and the first window 2 which are viewed from the side of the shielding member 16 all illustrated in FIG. 3A. It should be noted that, in the present embodiment, the constituent parts other than the insulating member 21 are the same as those already described in the first embodiment.
[0045]The present embodiment is characterized by the opening 22 of the insulating member 21 being formed inside the ...
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